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Long-Term Borrowings (Details) (USD $) In Thousands, unless otherwise specified | 0 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended |  |  |  |  | 0 Months Ended |  | 12 Months Ended |
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Aug. 01, 2012 | Dec. 29, 2013 | Mar. 30, 2014 | Sep. 28, 2013 | Sep. 29, 2012 | Sep. 24, 2011 | Sep. 29, 2012 Amended Credit Agreement [Member] | Sep. 28, 2013 Amended Credit Agreement Due 2017 [Member] | Sep. 28, 2013 Amended Credit Agreement Due 2017 [Member] LIBOR [Member] | Sep. 28, 2013 Amended Credit Agreement Due 2017 [Member] Federal Funds Rate [Member] | Sep. 28, 2013 Senior Note 2021 [Member] | Sep. 29, 2012 Senior Note 2021 [Member] | Sep. 28, 2013 Revolving Credit Facility [Member] | Sep. 29, 2012 Revolving Credit Facility [Member] | Sep. 28, 2013 7.5% Senior Notes due October 1, 2018 [Member] | Sep. 29, 2012 7.5% Senior Notes due October 1, 2018 [Member] | Aug. 01, 2012 7.5% Senior Notes due October 1, 2018 [Member] | Sep. 28, 2013 7.375% Senior Notes due March 15, 2020 [Member] | Sep. 29, 2012 7.375% Senior Notes due March 15, 2020 [Member] | Sep. 28, 2013 7.375% Senior Notes due August 1, 2021 [Member] | Aug. 06, 2013 7.375% Senior Notes due August 1, 2021 [Member] | Aug. 02, 2013 7.375% Senior Notes due August 1, 2021 [Member] | Sep. 29, 2012 7.375% Senior Notes due August 1, 2021 [Member] | Aug. 01, 2012 7.375% Senior Notes due August 1, 2021 [Member] | Aug. 14, 2012 Amended Credit Agreement [Member] 364-Day Facility [Member] | Aug. 01, 2012 Amended Credit Agreement [Member] 364-Day Facility [Member] | Sep. 28, 2013 Amended Credit Agreement [Member] Revolving Credit Facility [Member] | Aug. 01, 2012 Amended Credit Agreement [Member] Revolving Credit Facility [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term borrowings |  |  |  | $ 1,245,237 | $ 1,422,078 |  |  |  |  |  |  |  | $ 100,000 | $ 100,000 | $ 525,171 | $ 529,923 |  | $ 248,600 | $ 248,385 | $ 371,466 |  |  | $ 543,770 |  |  |  |  |
Stated interest rate (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.50% |  |  | 7.375% |  | 7.375% |  |  |  |  |  |  |  |
Maturity date |  |  |  |  |  |  |  |  |  |  |  |  | Jan. 05, 2017 |  | Oct. 01, 2018 |  |  | Mar. 15, 2020 |  | Aug. 01, 2021 |  |  |  |  |  |  |  |
Ownership interest in Suburban Energy Finance Corp (in hundredths) |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net unamortized premium |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 28,614 | 33,366 |  |  |  | 25,286 |  |  | 40,327 |  |  |  |  |
Net unamortized discount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,400 | 1,615 |  |  |  |  |  |  |  |  |
Date public offering completed |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Aug. 01, 2012 |  |  | Mar. 23, 2010 |  | Aug. 01, 2012 |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 496,557 |  |  | 250,000 |  | 503,443 |  | (157,263) |  |  |  |  |  |
Debt instrument repurchase amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 23,863 | 133,400 |  |  |  |  |  |
Loss on debt extinguishment |  |  |  | (2,144) | (2,249) | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  | (2,144) |  |  |  |  |  |  |  |
Debt instrument repurchase premium and related fees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,759 |  |  |  |  |  |  |  |
Amortization of financing costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,064 |  |  |  |  |  |  |  |
Unamortized premium |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (11,678) |  |  |  |  |  |  |  |
Fair value of debt at acquisition date (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 106.875% |  |  |  |  |  |  | 108.125% |  |  |  |
Percentage of principal amount at which debt was issued (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 99.136% |  |  |  |  |  |  |  |  |  |
Percentage of the principal amount repurchase offer under change of control provision (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 101.00% |  |  |  |  |  |  |  |  |  |
Number of days after the consummation of the change of control that a rating decline may occur to trigger offer to repurchase debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90 days |  |  |  |  |  |  |  |  |  |
Revolving credit facility, term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |
Credit Facility, maximum amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,000 | 400,000 | 400,000
Amount drawn under credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 225,000 |  |
Term of facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 364 days |  |
Repayments of short-term borrowings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 225,000 |  |  |
Standby letters of credit issued under the Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  | 46,742 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available borrowing capacity under Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  | 253,258 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 103.75% |  |  |  |  |  |  |  |  |  |  |  |  |
2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 101.875% |  |  | 103.688% |  |  |  |  |  |  |  |  |  |
2016 and thereafter |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |
2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 102.459% |  | 103.688% |  |  |  |  |  |  |  |
2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 101.229% |  | 102.459% |  |  |  |  |  |  |  |
2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 101.229% |  |  |  |  |  |  |  |
2018 and thereafter |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |
2019 and thereafter |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility borrowings |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility and 2020 Senior Notes covenants [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated interest coverage ratio, minimum | 2.0 to 1.0 |  | 2.5 to 1.0 | 2.25 to 1.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total consolidated leverage ratio, maximum |  |  |  | 7.0 to 1.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated fixed charge coverage ratio, minimum |  |  |  | 1.75 to 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in Consolidated leverage ratio, minimum |  | 4.75 to 1.0 |  | 4.75 to 1.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in Consolidated leverage ratio during acquisition period, minimum |  | 5.0 to 1.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Description of variable rate basis |  |  |  | A portion of the Partnership's borrowings bear interest at prevailing interest rates based upon, at the Operating Partnership's option, LIBOR plus an applicable margin or the base rate, defined as the higher of the Federal Funds Rate plus .5 of 1% or the agent bank's prime rate, or LIBOR plus 1%, plus the applicable margin. The applicable margin is dependent on the level of the Partnership's total leverage (the ratio of total debt to income before deducting interest expense, income taxes, depreciation and amortization ("EBITDA")). Therefore, the Partnership is subject to interest rate risk on the variable component of the interest rate. The Partnership manages part of its variable interest rate risk by entering into interest rate swap agreements. The interest rate swaps have been designated as, and are accounted for as, cash flow hedges. The fair value of the interest rate swaps are determined using an income approach, whereby future settlements under the swaps are converted into a single present value, with fair value being based on the value of current market expectations about those future amounts. Changes in the fair value are recognized in OCI until the hedged item is recognized in earnings. However, due to changes in the underlying interest rate environment, the corresponding value in OCI is subject to change prior to its impact on earnings. |  |  |  |  | LIBOR | Federal Funds Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Margin over basis rate (in hundredths) |  |  |  | 1.00% |  |  |  |  | 1.00% | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average interest rate (in hundredths) |  |  |  |  |  |  |  | 2.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swap agreement [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Notional Amount |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective date |  |  |  | Mar. 31, 2010 |  |  |  | Jun. 25, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Termination date |  |  |  | Jun. 25, 2013 |  |  |  | Jan. 05, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed interest rate (in hundredths) |  |  |  | 3.12% |  |  |  | 1.63% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt origination costs [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on the extinguishment of debt related to write-off in unamortized debt origination costs and unamortized discount |  |  |  |  |  |  | 2,249 |  |  |  | 2,064 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capitalized debt origination costs |  |  |  | 21,254 | 28,076 |  | 10,314 |  |  |  |  | 14,885 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt maturities [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt maturities, 2014 |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt maturities, 2015 |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt maturities, 2016 |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt maturities, 2017 |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt maturities, 2018 |  |  |  | 496,557 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt maturities, 2019 and thereafter |  |  |  | $ 596,180 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Number of days following a change of control, as defined in the indenture, that a rating decline (a decrease in the rating of the notes by either Moody's Investors Service or Standard and Poor's Rating group by one or more gradations) can occur to trigger repurchase offer. + References No definition available. + Details
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